Relative mRNA levels of 37/67 kDa laminin receptor (37/67LR) and matrix-metalloproteinase-(MMP)-2. Relative mRNA levels in small intestinal mucosa of vitamin D receptor knockout (VDR-KO) and wildtype (WT) mice were determined by real-time detection RT-PCR analysis. Expression values were normalized to HPRT and Ppia. Bars represent means ± s.d. (n = 6). *Significantly different from WT mice (p < 0.05, Student’s t-test).